{ "HAPI": "3.2", "x_description": "This dataset represents dipolarization front (DF) events identified by the Cluster SC. The four spacecraft tetrahedron configuration of Cluster makes it possible to measure gradients in the magnetic field and in other parameters of the magnetotail plasma. For this reason not only the time of the DF onset of one spacecraft (the reference spacecraft) is given but also the time of the DF onset at the other spacecraft, provided that the other spacecraft observe a DF within the event interval of the reference spacecraft. If the same event is observed by more than one spacecraft the event is only recorded once. Reference spacecrafts are C1 and C3 due to poorer resolution and quality of plasma data on other spacecrafts. All parameters are in GSM coordinates. For more dataset details see the documentation. This dataset was generated as part of European Union ECLAT project. The aim of the European Cluster Assimilation Technology (ECLAT) is to provide a novel data base, by providing an upgrade to the CAA. To achieve this , ECLAT programme ingests into the CAA supporting data from other space- and ground-based observatories, provide data mining routines, refine data products and software tools for their visualisation, and develop existing European magnetospheric modeling infrastructure to provide context for the observational data. The contacts for the ECLAT project are Steve Milan, University of Leicester Rumi Nakamura, Oesterreichische Akademie der Wissenschaften Kirsti Kauristie, Finnish Meterological Institute Victor Sergeev, Petersburg State University Hermann Opgenoorth, Swedish Institute of Space Physics", "cadence": "PT201600.000000S", "parameters": [ { "type": "isotime", "x_type": "ISO_TIME_RANGE", "units": "UTC", "name": "event_interval", "description": "Event interval", "label": "Universal Time", "fill": null }, { "type": "isotime", "x_type": "ISO_TIME_RANGE", "units": "UTC", "name": "event_interval_stop", "fill": null }, { "type": "integer", "name": "ref_sc", "description": "Reference SC number: 1, 2, 3, 4", "label": "Reference SC", "units": null, "fill": "-1" }, { "type": "double", "name": "median_Bxy", "description": "median reference SC GSM Bxy(=SQRT((Bx^2)+(By^2)) in interval", "label": "median Bxy GSM", "units": "nT", "fill": "-1e30" }, { "type": "double", "name": "median_Bz", "description": "median GSM Bz in event interval on the reference SC", "label": "median Bz GSM", "units": "nT", "fill": "-1e30" }, { "type": "double", "name": "min_Bz", "description": "minimum GSM Bz in interval for the reference SC", "label": "min Bz GSM", "units": "nT", "fill": "-1e30" }, { "type": "double", "name": "max_Bz", "description": "maximum reference SC GSM Bz in interval", "label": "max Bz GSM", "units": "nT", "fill": "-1e30" }, { "type": "isotime", "units": "UTC", "name": "t_bz_min_C1", "description": "Epoch of dipolarization Bz minimum in SC C1", "label": "Time of Bz minimum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_min_C2", "description": "Epoch of dipolarization Bz minimum in SC C2", "label": "Time of Bz minimum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_min_C3", "description": "Epoch of dipolarization Bz minimum in SC C3", "label": "Time of Bz minimum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_min_C4", "description": "Epoch of dipolarization Bz minimum in SC C4", "label": "Time of Bz minimum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_max_C1", "description": "Epoch of maximum Bz in event interval for SC C1", "label": "Time of Bz maximum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_max_C2", "description": "Epoch of maximum Bz in event interval for SC C2", "label": "Time of Bz maximum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_max_C3", "description": "Epoch of maximum Bz in event interval for SC C3", "label": "Time of Bz maximum", "fill": null }, { "type": "isotime", "units": "UTC", "name": "t_bz_max_C4", "description": "Epoch of maximum Bz in event interval for SC C4", "label": "Time of Bz maximum", "fill": null }, { "type": "double", "name": "medianBz_plus90", "description": "median reference SC GSM Bz from min Bz epoch to +90 seconds", "label": "90s median Bz (GSM)", "units": "nT", "fill": "-1e30" }, { "type": "double", "name": "medianBz_minus90", "description": "median reference SC GSM Bz from -90 seconds to min Bz epoch", "label": "-90s median Bz (GSM)", "units": "nT", "fill": "-1e30" }, { "type": "double", "name": "median_Vx", "description": "median reference SC Vx flow in event interval", "label": "median Vx", "units": "kms^-1", "fill": "-1e30" }, { "type": "double", "name": "median_plasma_beta", "description": "Median reference SC plasma beta", "label": "median region beta", "units": null, "fill": "-1e30" }, { "type": "integer", "name": "flag", "description": "Event flags. 0-no flag, 1-single dipolarization, 2-multi dipolarizations", "label": "Event flags", "units": null, "fill": "-1" }, { "type": "double", "name": "sc_pos", "description": "Reference Spacecraft x,y,z location at time of Bz min", "label": "Ref SC position in Re (GSM)", "units": "Re", "fill": "-1e30", "size": [ 3 ] } ], "startDate": "2001-01-01T00:00Z", "stopDate": "2010-01-01T00:00Z", "x_tap_url": "https://csa.esac.esa.int/csa-sl-tap/data?retrieval_type=HEADER&DATASET_ID=CM_CP_AUX_ECLAT_DIPOLE&FORCEPACK=false", "x_tap_data_url": "https://csa.esac.esa.int/csa-sl-tap/data?RETRIEVAL_TYPE=product&RETRIEVAL_ACCESS=streamed&DATASET_ID=CM_CP_AUX_ECLAT_DIPOLE&START_DATE=2010-01-01T00:00Z&END_DATE=2010-01-01T00:00Z", "status": { "code": 1200, "message": "OK" }, "x_LastUpdate": "2026-04-12T15:10:56Z" }